The second mirror for the upstairs bathroom is complete and I’m as pleased as I can be with the result. Everything seems balanced out now.
In making the second mirror, I took no chances and went straight to a rabbeting bit in the trim router. There is something to be said for ultra-repeatablility and ease.
There are a great many power tools I’ve given up since I first started woodworking, but I would rather die than be without my rabbeting bit and flush trim bit (both of which have a place in a hand tool-focused shop).